A 43.0 g ball is fired horizontally with initial speed v0toward a 107 g ball that is hanging motionless from a 1.2 m -long string. The balls undergo a head-on, perfectly elastic collision, after which the 107 g ball swings out to a maximum angle θmax = 50.0 ∘.

What was v0?

what are the pros of using traditional value stream mapping (VSM) in going from a current state of "push" contol to re-design of a "future" state "pull" process and how does it contrast to using VSM in using factory physics principles to change the current process

A transmission wire oriented parallel to the x-axis carries a current of   200 A   flowing along the +x direction. A second transmission wire also oriented parallel to the x-axis but lying at a perpendicular distance of   1.25 m   below the first wire carries a current of   250 A flowing along the +x direction. What is the magnitude of the total magnetic field at a point midway between the two wires?

Express your answer to three significant figures and include the appropriate units.

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Part B

What is the direction of the net magnetic field in part A?

Select the applicable choice.

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Select the applicable choice.

Part C

A transmission wire oriented parallel to the y-axis carries a current of   200 A    flowing along the +y direction. A second transmission wire also oriented parallel to the y-axis but lying at a perpendicular distance of   1.25 m    below the first wire carries a current of   250 A    flowing along the +y direction. What is the magnitude of the total magnetic field at a point   2.10 m   directly below a point midway between the two wires?

Express your answer to three significant figures and include the appropriate units.

Part D

What is the direction of the net magnetic field in part C?

Select the applicable choice.

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Select the applicable choice.

Part E

A transmission wire oriented parallel to the y-axis carries a current of   200 A    flowing along the +y direction. A second transmission wire also oriented parallel to the y-axis but lying at a perpendicular distance of   1.25 m    below the first wire carries a current of   250 A     flowing along the +y direction. If the location where the net magnetic field is zero is at perpendicular distance  d from the first wire, what is d ?

Express your answer to three significant figures and include the appropriate units.

Part F

A transmission wire oriented parallel to the z-axis carries a current of   200 A    flowing along the +z direction; the wire passes through the point (4.20 m, 0 m, 0 m) on the x-axis. A second transmission wire also oriented parallel to the z-axis carries a current of   250 A    flowing along the -z direction; the wire passes through the point (0 m, 4.10 m, 0 m) on the y-axis. What is the magnitude of the total magnetic field at the origin?

Express your answer to three significant figures and include the appropriate units.

what essential contruction design is needed to recieve an incomming horizontal EM wave if the reciever is built for interpreting changes in the electric field? what if it was built to recieve the magnetic field?

Please post answers in excel showing all formulas used.

Refer to the gasoline sales time series data in the given table.

1. Compute four-week and five-week moving averages for the time series. Round your answers to two decimal places.
   

   Week	Sales	4-Week Moving Average	5-Week Moving Average
   1	18
   2	21
   3	19
   4	22
   5	18
   6	16
   7	20
   8	19
   9	23
   10	19
   11	16
   12	22

2. Compute the MSE for the four-week and five-week moving average forecasts. Round your intermediate calculations and final answers to two decimal places.
   
   MSE for four-week moving average =  
   
   MSE for five-week moving average =
   
3. What appears to be the best number of weeks of past data (three, four, or five) to use in the moving average computation? Recall that MSE for the three-week moving average is 9.
   
   

(a) What is the advantage and disadvantage images from radioactivity compared imaging from ultrasound, x-ray and CT?

(b)Explain in detail the operation of a PET scanner, illustrating your points by using more than one drawing, appropriately labeled.

One of the many isotopes used in cancer treatment is gold ¹⁹⁸₇₉Au, with a half-life of 2.70 days. Determine the mass of this isotope that is required for an activity of 200 Ci.

I got an answer of 30.99g but this was wrong.

Air enters a nozzle steadily at 280 kPa and 77°C with a velocity of 70 m/s and exits at 85 kPa and 320 m/s. The heat losses from the nozzle to the surrounding medium at 20°C are estimated to be 3.2 kJ/kg.

The table for the ideal-gas properties of air is given below.

Determine the exit temperature. (Round the final answer to one decimal).

The exit temperature is ______K

Determine the total entropy change for this process. (Round the final answer to four decimal places.) (You must provide an answer before moving on to the next part.)

The total entropy change for this process is ______kJ/kg·K.

A 31 g ice cube at -15.0oC is placed in 139 g of water at 48.0oC. Find the final temperature of the system when equilibrium is reached. Ignore the heat capacity of the container and assume this is in a calorimeter, i.e. the system is thermally insulated from the surroundings. Give your answer in oC with 3 significant figures.
Specific heat of ice: 2.090 J/g K
Specific heat of water: 4.186 J/g K
Latent heat of fusion for water: 333 J/g

Two objects undergo an elastic collision. Object 1 has a mass of 1.35 kg and object 2 a mass of 3 kg. Just prior to the collision, object 1 has a kinetic energy of 77 J and object 2 is at rest. What is the initial velocity of Object 1? What is the total kinetic energy of the two cart system after the collision? What is the total momentum of the two cart system after the collision?

Research and then name the fundamental Raman modes of SWCNTs and describe briefly their energy and source in the nanotubes.

The space elevator project is an effort that intends to place an elevator system grounded on the Earth into geosynchronous orbit. Carbon nanotubes are the only material strong enough to make this elevator. What is it about carbon nanotubes that make people think this way? Do you think a space elevator is possible? What are some potential issues?

The electric potential at a position located a distance of 22.5 mm from a positive point charge of 8.20×10^-9C and 13.0 mm from a second point charge is 1.06 kV. Calculate the value of the second charge.

Also...

A positive charge of 4.40 μC is fixed in place. From a distance of 4.40 cm a particle of mass 6.00 g and charge +3.90 μC is fired with an initial speed of 66.0 m/s directly toward the fixed charge. How close to the fixed charge does the particle get before it comes to rest and starts traveling away?

A mass of 9 kg rests on a floor with a coefficient of static friction of 0.92 and coefficient kinetic friction of 0.37. One force is applied vertically downward of 22 Newtons and another force is applied at an angle of 26 degrees below the horizontal. Calculate what the magnitude this force needs to be in order to begin to move the mass. If that force is removed and another force is applied at an angle of 26 degrees above the horizontal (the downward force is still there), calculate the force needed to begin to move the force for that situation. How much more force is needed to begin the mass, in Newtons, when the force is angled below the horizontal compared to above the horizontal?

a. Explain what is meant by the barrier potential and how it is formed before any bias is applied. [3 marks] b. When the diode is forward biased: i. What happens to the barrier potential? [1 mark] ii. What happens to the depletion region? [1 mark] iii. Indicate on your diagram the directions in which the holes and electrons move. [2 marks] c. Explain what is meant by the forward voltage drop of a diode. [2 marks] d. When the diode is reverse biased: i. What happens to the depletion region? [1 mark] ii. What causes the reverse bias leakage current? [2 marks]